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Side-scan sonar surveying on the continental shelf off Sierra Leone

Authors :
Kudrass, H.-R.
Newton, R. S.
Publication Year :
1984
Publisher :
Bornträger, 1984.

Abstract

Along the Sierra Leone continental shelf edge, bedded rocks, presumably mostly calcareous sandstone, calcarenites and siltstones form exposures up to 10 km long in water depths ranging from 80 to 110 m. These outcrops are found in a 6 km broad zone along the shelf edge; landward they get covered by recent shelf sands. Their apparent strike direction parallds the shelf edge indicating nearly horizontal bedding which locally is interrupted by faulting. On the middle shelf, a terrace is well developed at a water depth of 56 m. Ripples, megaripples, pockmarks 1-5 m in diameter, and canyon-heads form other significant features of the shelf.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.od......2386..d9e6e6e9c65775563da9b46a8e192561